A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
Classification: Nuts of iron or steel
NSN 6240-01-605-1799
NSN 6645-00-596-5388
NSN 5975-01-509-2209
NSN 5910-01-573-6538
NSN 5975-00-823-0979
NSN 6145-01-482-0974
NSN 5835-01-383-1313
NSN 4140-01-634-0330
NSN 5945-01-406-3200
NSN 5855-01-523-3724
NSN 6650-01-168-8451
NSN 5999-01-644-1328